Problem & answerH-18
Ground Fault Detected
Likely causes
- Damaged cable insulation
- Moisture ingress
- Faulty motor winding
- Incorrect wiring
How to fix it
- 1Isolate the supply.
- 2Carry out insulation resistance testing.
- 3Inspect cables for damage.
- 4Repair or replace the faulty component.
- 5Verify earth continuity before restarting.
It is fixed when
No ground fault; insulation resistance meets specification.
Stop it coming back
- Annual insulation resistance testing; inspect cables regularly.
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